package com.sky.aspect;

import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Component
@Aspect
@Slf4j
public class AutoFillAspect {

    @Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
    void autoFillPointCut() {}

    @Before("autoFillPointCut()")
    void autoFill(JoinPoint joinPoint) {
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        OperationType value = signature.getMethod().getAnnotation(AutoFill.class).value();

        Object[] args = joinPoint.getArgs();
        if (args == null || args.length == 0) return;
        Object entity = args[0];
        LocalDateTime now = LocalDateTime.now();
        Long currentId = BaseContext.getCurrentId();

        try {
            Method setCreateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
            Method setCreateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
            Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
            Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);

            if (value == OperationType.INSERT) {
                setCreateTime.invoke(entity, now);
                setUpdateTime.invoke(entity, now);
                setCreateUser.invoke(entity, currentId);
                setUpdateUser.invoke(entity, currentId);
            } else if (value == OperationType.UPDATE) {
                setUpdateTime.invoke(entity, now);
                setUpdateUser.invoke(entity, currentId);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}
